/* 文本格式化工具栏样式 */
.text-format-toolbar {
  position: absolute;
  z-index: 9999;
  display: none;
  background: var(--bg-primary, #ffffff);
  border: 1px solid var(--border-color, #e0e0e0);
  border-radius: 8px;
  padding: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  user-select: none;
  animation: fadeInScale 0.15s ease-out;
}

.text-format-toolbar.visible {
  display: flex;
  align-items: center;
  gap: 4px;
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 工具栏按钮组 */
.toolbar-btn-group {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 4px;
  border-right: 1px solid var(--border-color, #e0e0e0);
}

.toolbar-btn-group:last-child {
  border-right: none;
}

/* 工具栏按钮 */
.toolbar-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-primary, #333333);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.15s ease;
  position: relative;
}

.toolbar-btn:hover {
  background: var(--hover-bg, #f0f0f0);
  color: var(--primary-color, #409eff);
}

.toolbar-btn:active {
  transform: scale(0.95);
}

.toolbar-btn.heading {
  font-size: 12px;
  width: 36px;
}

/* 颜色选择器容器 */
.color-picker-wrapper {
  position: relative;
}

.color-picker-dropdown {
  position: absolute;
  top: 40px;
  left: 0;
  background: var(--bg-primary, #ffffff);
  border: 1px solid var(--border-color, #e0e0e0);
  border-radius: 6px;
  padding: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: none;
  z-index: 10000;
  animation: fadeInScale 0.15s ease-out;
}

.color-picker-dropdown.visible {
  display: block;
}

.color-picker-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  min-width: 140px;
}

.color-option {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.color-option:hover {
  transform: scale(1.1);
  border-color: var(--primary-color, #409eff);
}

.color-option:active {
  transform: scale(0.95);
}

/* 颜色选项具体颜色 */
.color-option[data-color="black"] { background: #000000; }
.color-option[data-color="red"] { background: #f56c6c; }
.color-option[data-color="blue"] { background: #409eff; }
.color-option[data-color="green"] { background: #67c23a; }
.color-option[data-color="orange"] { background: #e6a23c; }
.color-option[data-color="purple"] { background: #9b59b6; }
.color-option[data-color="gray"] { background: #909399; }
.color-option[data-color="white"] { 
  background: #ffffff; 
  border-color: var(--border-color, #e0e0e0);
}

/* 工具提示 */
.toolbar-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: #ffffff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 400;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.toolbar-btn:hover::after {
  opacity: 1;
}

/* 暗色主题适配 */
.dark-theme .text-format-toolbar {
  background: var(--bg-primary, #1e1e1e);
  border-color: var(--border-color, #3e3e3e);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.dark-theme .toolbar-btn {
  color: var(--text-primary, #cccccc);
}

.dark-theme .toolbar-btn:hover {
  background: var(--hover-bg, #2a2a2a);
  color: var(--primary-color, #409eff);
}

.dark-theme .toolbar-btn-group {
  border-right-color: var(--border-color, #3e3e3e);
}

.dark-theme .color-picker-dropdown {
  background: var(--bg-primary, #1e1e1e);
  border-color: var(--border-color, #3e3e3e);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
}

.dark-theme .color-option[data-color="white"] { 
  border-color: var(--border-color, #3e3e3e);
}

/* 下划线按钮特殊样式 */
.toolbar-btn u {
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

/* 颜色选择按钮样式 */
.toolbar-btn.text-color,
.toolbar-btn.underline-color {
  position: relative;
}